Usage:
Rotation is clockwise when seen from drive end.
Type of pump: Gear
Displacement ... 28.5 cm3/rev (1.74 in3/rev)
Relief valve setting ... 18 950 kPa (2750 psi)
Steering Control Unit (SCU)
Displacement ... 462 cm3/rev (28.2 in3/rev)
(1) Torque for setscrew (not shown) on end of housing ... 11 ± 1 N·m (100 ± 10 lb in)
(2) Pin and the groove of the drive shaft must be aligned with the root of the rotor.
Tighten bolts in sequence shown to an initial torque of ... 17 N·m (150 lb in)
Then tighten bolts in sequence shown to a final torque of ... 28 ± 3 N·m (250 ± 25 lb in)
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If the steering control unit (SCU) drive is not timed correctly, the machine can turn in the opposite direction as the steering wheel. To prevent personal injury, loss of life and/or property damage, make sure the drive is timed correctly. |
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Steering Column Group
(1) Torque for steering wheel nut ... 41 to 54 N·m (30 to 40 lb ft)
(2) Torque for SCU mounting bolts ... 23 ± 4 N·m (17 ± 3 lb ft)
Hydraulic Oil Filter
(1) Bypass valve opens at a pressure differential of ... 345 ± 35 kPa (50 ± 5 psi)
(2) Visual Bypass Indicator shows red at a pressure differential of ... 172 ± 34 kPa (25 ± 5 psi)
(3) Tighten filter to a torque of ... 44 ± 3.5 N·m (32.6 ± 2.6 lb ft)
Return Manifold
Check valve setting ... 207 kPa (30 psi)
Maximum pressure rise across check valve at full flow and at 38°C (100°F) ... 172 kPa (25 psi)
Steering Cylinders
(1) Put hydraulic oil on rod end threads. Torque for piston nut ... 820 ± 28 N·m (590 ± 20 lb ft)
(2) Rod diameter (new) ... 38.090 ± .013 mm (1.4995 ± .0005 in)
(3) Head bore (new) ... 38.200 ± .025 mm (1.5040 ± .0010 in)
(4) Cylinder bore (new) ... 76.162 ± .038 mm (2.9985 ± .0015 in)
Steering Pivot And Oscillation Assembly
Procedure to shim upper steering pivot pin:
Shim top steering pivot pin so gap is less .80 mm (.030 in) while prying the pivot assembly up. Thickest shims should be first.
(1) Steering pivot pin diameter ... 76.20 + 0.00 - 0.056 mm (3.000 + .000 - .002 in)
(2) Steering Pivot shims:
.80 mm (.030 in)
1.20 mm (.047 in)
2.00 mm (.079 in)
3.50 mm (.138 in)
(3) Outer bearing diameter ... 120.650 + 0.000 - .020 mm (4.7500 + .0000 - .0008 in)
(4) Inner bushing compressed diameter ... 76.5 mm (3.01 in)
(5) Outer bushing compressed diameter ... 88.9 mm (3.50 in)
(6) Inner bearing diameter ... 76.200 + 0.000 - 0.015 mm (3.0000 + .0000 - .0006 in)
(7) Steering pivot frame diameter ... 88.90 ± 0.04 mm (3.500 ± .002 in)
(8) Pivot housing diameter ... 120.615 ± .019 mm (4.7486 ± .0007 in)
(9) Oscillation shims:
.25 mm (.010 in)
.80 mm (.030 in)
1.20 mm (.047 in)
1.60 mm (.059 in)
3.00 mm (.105 in)
Shim for 0.0 to 0.25 mm (0.0 to 0.010 in) endplay